Weather forecast for tomorrowPotomac, IL
Weather forecast for tomorrow
Sunday Oct 18, 2026
- 66°F
- 36°F
Sunny
- Precip. probability: 4%
- Precipitation: 0"
- Wind: 11mphS 187°
- Humidity: 48%
- UV index: 4
- Sunrise: 7:05 am CDT
- Sunset: 6:07 pm CDT
- details ▼
On Sunday, in Potomac, sun-filled conditions are also expected to persist.
A daytime temperature reaching up to an enjoyable 66.2°F will sharply contrast with a nighttime low of an icy 35.6°F.
The predicted maximum temperature will closely reflect October's average high of 62.8°F.
Sunrise will be at 7:05 am and sunset at 6:07 pm; tomorrow's daylight will last for 11h and 2min.
A daytime temperature reaching up to an enjoyable 66.2°F will sharply contrast with a nighttime low of an icy 35.6°F.
The predicted maximum temperature will closely reflect October's average high of 62.8°F.
Sunrise will be at 7:05 am and sunset at 6:07 pm; tomorrow's daylight will last for 11h and 2min.
Hourly overview
Hourly temperatures
Warmest hour: 3 pm 64°C.
Coldest hour: 6 am 36°C.
Coldest hour: 6 am 36°C.
Chance of precipitation
Highest chance: 6 am 4%.
Hourly weather forecast
- 12 am
- 39°F
- Feels like:39°F
Clear
- Precip. probability: 1%
- Precipitation: 0"
- Wind: 2mphSSE 168°
- Humidity: 77%
- Pressure: 30.47"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
- 2 am
- 37°F
- Feels like:36°F
Clear
- Precip. probability: 1%
- Precipitation: 0"
- Wind: 3mphS 170°
- Humidity: 78%
- Pressure: 30.47"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
- 4 am
- 37°F
- Feels like:34°F
Clear
- Precip. probability: 3%
- Precipitation: 0"
- Wind: 3mphS 179°
- Humidity: 81%
- Pressure: 30.47"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
- 6 am
- 36°F
- Feels like:32°F
Clear
- Precip. probability: 4%
- Precipitation: 0"
- Wind: 4mphS 177°
- Humidity: 84%
- Pressure: 30.5"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
Sunrise: 7:05 am
- 8 am
- 39°F
- Feels like:36°F
Sunny
- Precip. probability: 3%
- Precipitation: 0"
- Wind: 4mphS 180°
- Humidity: 79%
- Pressure: 30.5"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
- 10 am
- 52°F
- Feels like:48°F
Sunny
- Precip. probability: 0%
- Precipitation: 0"
- Wind: 9mphS 191°
- Humidity: 54%
- Pressure: 30.5"Hg
- Visibility: 10mi
- UV index: 2
- details ▼
- 12 pm
- 59°F
- Feels like:57°F
Sunny
- Precip. probability: 0%
- Precipitation: 0"
- Wind: 11mphSSW 198°
- Humidity: 40%
- Pressure: 30.47"Hg
- Visibility: 10mi
- UV index: 4
- details ▼
- 2 pm
- 63°F
- Feels like:63°F
Sunny
- Precip. probability: 0%
- Precipitation: 0"
- Wind: 10mphSSW 192°
- Humidity: 33%
- Pressure: 30.42"Hg
- Visibility: 10mi
- UV index: 3
- details ▼
- 4 pm
- 64°F
- Feels like:63°F
Sunny
- Precip. probability: 0%
- Precipitation: 0"
- Wind: 9mphS 184°
- Humidity: 31%
- Pressure: 30.39"Hg
- Visibility: 10mi
- UV index: 1
- details ▼
- 6 pm
- 59°F
- Feels like:57°F
Sunny
- Precip. probability: 0%
- Precipitation: 0"
- Wind: 5mphS 171°
- Humidity: 41%
- Pressure: 30.39"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
Sunset: 6:07 pm
- 8 pm
- 50°F
- Feels like:50°F
Clear
- Precip. probability: 1%
- Precipitation: 0"
- Wind: 4mphSSE 162°
- Humidity: 59%
- Pressure: 30.39"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
- 10 pm
- 46°F
- Feels like:45°F
Clear
- Precip. probability: 2%
- Precipitation: 0"
- Wind: 4mphSSE 166°
- Humidity: 72%
- Pressure: 30.39"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
Tomorrow, clear skies and sunny weather are expected.
The temperature will vary between a minimum of 35.6°F and a maximum of 64.4°F. The warmest part of the day will be at 3 pm and 4 pm.
The maximum temperature will be similar to October's average highest temperature of 62.8°F. The minimum temperature tomorrow will be more close to November's average low of 35.4°F than October's average of 46.9°F.
The temperature will vary between a minimum of 35.6°F and a maximum of 64.4°F. The warmest part of the day will be at 3 pm and 4 pm.
The maximum temperature will be similar to October's average highest temperature of 62.8°F. The minimum temperature tomorrow will be more close to November's average low of 35.4°F than October's average of 46.9°F.
Updated: Oct 18, 2026 @ 01:15:14 UTC
Published by: Weather U.S. | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate
Published by: Weather U.S. | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate
Frequently asked questions
On Sunday, in Potomac, conditions will remain bright with clear skies.
Tomorrow, the highest temperature will be 66.2°F, while the lowest temperature will be 35.6°F.
Tomorrow, the highest temperature will be in line with the average maximum temperature in October. Tomorrow, the lowest temperature will be significantly lower than the average low of 46.9°F.
Tomorrow, the highest temperature will be in line with the average maximum temperature in October. Tomorrow, the lowest temperature will be significantly lower than the average low of 46.9°F.
On Sunday, in Potomac, sunrise will be at 7:05 am and sunset at 6:07 pm (CDT).
In Potomac, the length of the day tomorrow will be 11h and 2min.
